PrecisionTemp RV550 Operating instructions

RV550OPERATINGINSTRUCTIONS



TheRV‐550isdesignedtogiveacontinuousflowofhotwaterforaslongasrequiredand

maintainaconstantwatertemperature.Thetemperatureonyourwaterheaterhasbeen

factorysettothehottestsettingapproximately120+°F.Atemperatureadjustmentmaybe

required,basedonincomingwatertemperature,duringsummerorwintermonthsto

decreaseorincreaseoutgoingwatertemperature.Thetemperaturecanbeadjustedby

turningthetemperatureadjustment(summer/winter)clockwiseorcounterclockwiseto

maintainacomfortablewatertemperature.Beawaretheheateriscapableofproducing

dangerouslyhottemperaturesthatcouldresultinsevereinjury.RefertotheServiceManual

orcallPrecisionTempforassistanceifneeded.

Theheaterisdormantuntilahotwatertapisopened.Thehotwatertapmustbecompletely

openedtostarttheheatingprocessthenthrottledbacktoproduceveryhotwater.The

heaterwillnotfireatverylowflows;i.e.,under0.5GPM.Whenadjustingwatertemperature

byaddingcoldwateritisbesttostartwithhotonlyandslowlyaddcoldintothemixuntilthe

desiredtemperatureisreached.

NOTE:Whenusingan"on/off"buttononashowerheadoranoutsidewashdownbox,always

turnoffthehotandcoldwatervalveswhenfinished.Notdoingsowillresultincoldwater

bleedingintothehotwaterplumbing.



DryCamping

RVshowerheadsaredesignedtodripwhenturnedoffandwillallowthehotwaterlinetobe

filledwithcoldwater.Whenshoweringitisrecommendedthatyouleavethewaterrunning

asyouwouldathome.Youwillnotrunoutofhotwaterandyouwillnotwasteadditional

waterwaitingforthecoldwatertopurgefromthewaterlineeverytimethewateristurned

backon.



WinterOperation

WhenoperatingtheRV500incoldclimateconditionstheflowofwatermayhavetobeslightly

restrictedorslowedatthefaucettomaintainthesettemperatureof120+degrees.

NOTE:YourRV550isequippedwiththeColdWeatherProtectionPackage. The12vdcpower

andpropanemustbeleftontoprotecttheRV550fromfreezingincoldclimateconditions.



WinterDrivingInstructions:Undernocircumstancesshouldyoutravelinfreezingconditions

withoutfirstdrainingwaterfromtheunit.Freezingisnotcoveredundertheproduct

warranty.



RV550WaterHeater

WinterDrivingDrainingInstructions



1. Turnoffwatersupply.

2. Openallhotwaterfaucets.

3. Opentheplumbinglowpointdrain.

4. RemovetheRV550doorandopenthePressureReliefValvebymovingthelevertothe

openposition.

5. ThewaterlinesandtheRV550willnowdrain.

6. WhenallwaterisdrainedfromthehotwaterlinesleavethePressureReliefValveand

hotwaterfaucetsopenwhiledriving.

7. Theheaterisnowsafetodriveinfreezingtemperatures.

8. OnceyourdestinationisreachedclosetheRV550PressureReliefValveandclosethe

drainvalve.Turnonwatersupply,onceairispurgedfromthelinescloseallhotwater

faucetsandturnonpower.



RoutineMaintenance

Allfaucetaeratorsandshowerheadscreensshouldbecleanedregularly.Itisrecommended

thattheRV‐550beinspectedbyaqualifiedservicetechnicianatleastonceayear.Particular

attentionshouldbepaidtothefollowing:

1.Inspecttheairinletopeningsandflueareatobeclearofanydebrisorobstructions,(leaves,

bugnests,spiderwebs,etc.)

2.Checkthattheheatermountingissecuretothecoachandtherearenoareasforpotential

waterleaks.

3.Openthecoveroftheheaterandinspectfordebris.Inspectthepowerventexhaust

openingandtheclearairpressureswitchtubefordebrisorobstructions.Cleanifneeded.

4.Visuallyinspectwiring.Besurethereisnochafingoftheinsulation.Besurethatthedirect

sparkignitioncable(blackwire)issecuredtotheelectrodeattheburner.Ifanywiringis

chaffedordamagedinanywayrepairasneeded.

5.Checkforsootaroundtheexhaustopening.Sootisasignofincompletecombustion.Ifyou

findsootbuildupcallaqualifiedservicetechniciantocorrecttheproblem.

6.Thepressurereliefvalveshouldbemanuallyactivatedonceayearbymovingtheleveron

thetopofthevalve90°whilepoweristurnedoff.Neverperformthisoperationwhilethe

burnerisoperatingorscaldingcouldoccur.Neverplugthepressurereliefvalve.Ifthevalveis

actuatingtoofrequentlyreplacevalveorcontactPrecisionTemp.

7.Unplugallconnectorsandreconnectwithpowerturnedoff.Inspectandcleancorrosion

fromthegroundwireconnection.

NOTE:Shouldoverheatingoccurorthegassupplyfailstoshutoff,turnoffgasvalveatthe

supplytank.Immediatelycallaqualifiedservicetechnician

WARNING:Alwaysturnoffthe12‐voltpowersupplytotheheaterwhilethevehicleis

movingandduringanyfuelingoperations.Operatingthiswaterheateroranyotherignition

sourceduringfuelingcouldcauseafireorexplosionwhichcouldresultinseriousinjuryor

death.TryingtoproducehotwaterwhiledrivingormovingmaydamagetheRV550electrical

componentsandcauseafire.



IMPORTANTCOLDWEATHERPROTECTIONINFORMATION

WARNING:

Donotdisconnecttheelectricalsupplyorturnoffthepropanesupplywhen

temperaturesarenearorbelowfreezing.TheRV550freezeprotectionsystem

willnotworkiftheelectricalpowersourceorpropaneisdisconnected.

WARNING:Undernocircumstancesshouldyoutravelduringfreezing

conditionswithoutturningpoweroffanddrainingwaterfromtheRV550.

WINTERIZING

Draining

1.TurnoffthepowerandgassupplytotheRV550.

2.Turnoffmainwatersupply.

3.Openallhotwatertaps.(Bathroom,kitchen,laundry,etc.)

4.Drainallwaterfromplumbinglines.

5.OpenpressurereliefvalvetodrainremainingwaterfromtheRV550.

6.Aftercompletelydrainingthesystemitcanbewinterized,formost

RV’s,bypurgingtheremainingwateroutofwaterlineswithcompressedairor

pumpingRVantifreezesolutionthroughthehotandcoldwatersystem.The

heaterholdsapproximatelyonepintofwater.

PrecisionTemp

11SunnybrookDr.

Cincinnati,Ohio45237

513‐641‐4446

800‐934‐9690

service@precisiontemp.com

5/2013



PrecisionTemp RV550 Operating instructions

Other documents